tag:blogger.com,1999:blog-4912713243046142041.post4355833392659110478..comments2024-03-27T18:20:38.176-05:00Comments on TYWKIWDBI ("Tai-Wiki-Widbee"): Martian lake has water-iceMinnesotastanhttp://www.blogger.com/profile/01382888179579245181noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4912713243046142041.post-78114588700900638212012-09-10T14:18:29.651-05:002012-09-10T14:18:29.651-05:00It looks like the core of a large ice ball that mo...It looks like the core of a large ice ball that mostly melted from the heat of impact but the native temp stopped the process before all could melt. It seems to have a dome shape like a snow ball melting and flowing out in stop action.blogrollerhttps://www.blogger.com/profile/09406354370182504332noreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-75979107377125983842010-09-11T17:00:58.045-05:002010-09-11T17:00:58.045-05:00I've looked at the links, Seban, and can't...I've looked at the links, Seban, and can't quite comprehend them. But I'll take your word for it.Minnesotastanhttps://www.blogger.com/profile/01382888179579245181noreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-23053608582198828762010-09-11T16:53:21.538-05:002010-09-11T16:53:21.538-05:00Well to understand why the dry ice sublimates and ...Well to understand why the dry ice sublimates and not the water, you can just look at their phase diagrams:<br />http://www1.lsbu.ac.uk/water/phase.html<br />http://scifun.chem.wisc.edu/chemweek/pdf/carbondioxide.pdf<br /><br />If we consider that the pressure at the surface of Mars is in the order of 1kPa (or 0.01 bar), CO2 sublimates at around -120°C, while water stays solid until around 0°C.Seban678noreply@blogger.com